What are the alumina ceramics used for?

[China Aluminum Network] Alumina ceramics is a type of material that uses aluminum oxide (AL2O3) as the main material for thick film integrated circuits. Alumina ceramics have better conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic washing is required. Alumina ceramic is a widely used ceramic. Because of the superior performance of alumina ceramics, the application in modern society has become more and more extensive, satisfying the needs of daily use and special performance.

Alumina ceramics are divided into high-purity type and common type.

1. High-purity alumina ceramics ceramic materials with the content of Al2O3 above 99.9% have a sintering temperature of 1650-1990°C and a transmission wavelength of 1-6 μm. They are generally made of molten glass to replace platinum crucibles: Alkaline and corrosive alkali metals can be used as sodium lamps; it can be used as an integrated circuit substrate and high-frequency insulation material in the electronics industry.

2. Common type alumina ceramics are divided into 99 porcelains, 95 porcelains, 90 porcelains, 85 porcelains and other varieties according to the content of Al2O3. Sometimes the content of Al2O3 is 80% or 75%, which is also classified as ordinary alumina ceramics. Among them, 99 alumina ceramic materials are used to make high-temperature crucibles, refractory furnace tubes and special wear-resistant materials, such as ceramic bearings, ceramic seals, and water valve plates; 95 alumina ceramics are mainly used as corrosion-resistant and wear-resistant components; 85 porcelain As part of the talc is often incorporated, the electrical properties and mechanical strength are improved, and it can be sealed with molybdenum, tantalum, niobium, and other metals, and some are used as electrical vacuum devices.

Reference Chinese grinding network link: http://?NewsID=71919